scholarly journals Advances in Valorization of Lignocellulosic Biomass towards Energy Generation

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 309
Author(s):  
Ikram ul Haq ◽  
Kinza Qaisar ◽  
Ali Nawaz ◽  
Fatima Akram ◽  
Hamid Mukhtar ◽  
...  
Keyword(s):  
Lignocellulosic Biomass ◽  
Sustainable Energy ◽  
Value Added ◽  
Cost Effective ◽  
Energy Output ◽  
Sustainable Energy Systems ◽  
Pros And Cons ◽  
Fuel Source ◽  
Value Added Products

The booming demand for energy across the world, especially for petroleum-based fuels, has led to the search for a long-term solution as a perfect source of sustainable energy. Lignocellulosic biomass resolves this obstacle as it is a readily available, inexpensive, and renewable fuel source that fulfills the criteria of sustainability. Valorization of lignocellulosic biomass and its components into value-added products maximizes the energy output and promotes the approach of lignocellulosic biorefinery. However, disruption of the recalcitrant structure of lignocellulosic biomass (LCB) via pretreatment technologies is costly and power-/heat-consuming. Therefore, devising an effective pretreatment method is a challenge. Likewise, the thermochemical and biological lignocellulosic conversion poses problems of efficiency, operational costs, and energy consumption. The advent of integrated technologies would probably resolve this problem. However, it is yet to be explored how to make it applicable at a commercial scale. This article will concisely review basic concepts of lignocellulosic composition and the routes opted by them to produce bioenergy. Moreover, it will also discuss the pros and cons of the pretreatment and conversion methods of lignocellulosic biomass. This critical analysis will bring to light the solutions for efficient and cost-effective conversion of lignocellulosic biomass that would pave the way for the development of sustainable energy systems.

scholarly journals New Generation Urban Biorefinery toward Complete Utilization of Waste Derived Lignocellulosic Biomass for Biofuels and Value-Added Products

2019 ◽  
Vol 158 ◽  
pp. 918-925 ◽  
Author(s):  
Chengyu Dong ◽  
Ying Wang ◽  
Huaimin Wang ◽  
Carol Sze Ki Lin ◽  
Hsien-Yi Hsu ◽  
...  
Keyword(s):  
Lignocellulosic Biomass ◽  
Value Added ◽  
Complete Utilization ◽  
New Generation ◽  
Value Added Products

scholarly journals Exploiting xylan as sugar donor for the synthesis of an antiproliferative xyloside using an enzyme cascade

2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Manuel Nieto-Domínguez ◽  
José Alberto Martínez-Fernández ◽  
Beatriz Fernández de Toro ◽  
Juan A. Méndez-Líter ◽  
Francisco Javier Cañada ◽  
...  
Keyword(s):  
Chemical Synthesis ◽  
Biomass Conversion ◽  
Value Added ◽  
Cost Effective ◽  
Raw Material ◽  
Birchwood Xylan ◽  
Enzyme Cascade ◽  
Antiproliferative Agent ◽  
Xylanolytic Enzymes ◽  
Value Added Products

Abstract Background Currently, industrial societies are seeking for green alternatives to conventional chemical synthesis. This demand has merged with the efforts to convert lignocellulosic biomass into value-added products. In this context, xylan, as one of main components of lignocellulose, has emerged as a raw material with high potential for advancing towards a sustainable economy. Results In this study, the recombinant endoxylanase rXynM from the ascomycete Talaromyces amestolkiae has been heterologously expressed in Pichia pastoris and used as one of the catalysts of an enzyme cascade developed to synthesize the antiproliferative 2-(6-hydroxynaphthyl) β-d-xylopyranoside, by transglycosylation of 2,6-dihydroxynaphthalene. The approach combines the use of two fungal xylanolytic enzymes, rXynM and the β-xylosidase rBxTW1 from the same fungus, with the cost-effective substrate xylan. The reaction conditions for the cascade were optimized by a Central Composite Design. Maximal productions of 0.59 and 0.38 g/L were reached using beechwood xylan and birchwood xylan, respectively. For comparison, xylans from other sources were tested in the same reaction, suggesting that a specific optimization is required for each xylan variety. The results obtained using this enzyme cascade and xylan were similar or better to those previously reported for a single catalyst and xylobiose, an expensive sugar donor. Conclusions Beechwood and birchwood xylan, two polysaccharides easily available from biomass, were used in a novel enzyme cascade to synthetize an antiproliferative agent. The approach represents a green alternative to the conventional chemical synthesis of 2-(6-hydroxynaphthyl) β-d-xylopyranoside using a cost-effective substrate. The work highlights the role of xylan as a raw material for producing value-added products and the potential of fungal xylanolytic enzymes in the biomass conversion.

Microwave Thermal Conversion of Oil Palm and Related Biomass for Biofuels and Biochars

2014 ◽  
Vol 606 ◽  
pp. 223-226
Author(s):  
Farid Nasir Ani
Keyword(s):  
Oil Palm ◽  
Sustainable Energy ◽  
Renewable Energy Sources ◽  
Value Added ◽  
Thermal Conversion ◽  
Future Trend ◽  
Energy Sources ◽  
Environment Friendly ◽  
The World ◽  
Value Added Products

Energy crisis and continuously fluctuating cost of petroleum have move attention of researchers toward renewable and sustainable energy sources and materials. Biomass or bioresources is one of the abundant and cheap renewable energy sources and materials that is environment friendly in Malaysia and other tropical countries in the world. It has been identified as one of the main sources of the sustainable energy in the fifth fuel strategy in Malaysia. This paper describes several possible routes to provide energy as well as potential value-added products from bioresources. The future trend in thermo-conversion processing of the biomass is the utilization of microwave energy into renewable bio-fuels, materials and chemicals. The potential of uses of bio-oils and bio-chars from oil palm solid wastes for biofuels, materials and chemicals are given. The applications of these renewable sources to produce biofuels, materials and chemicals have been applied in some countries around the world. The implementation of the biomass technology will be best utilized and feasible when the technology is developed locally, fabricated and commission with the utilization of locally produced biomass. With the research and development efforts developed locally towards local expertise will help to produce indigenous technologies, thus reducing the high cost of import technology.

scholarly journals The Impact of R&D Expenditures on Corporate Performance: Evidence from Slovenian and World R&D Companies

2020 ◽  
Vol 12 (5) ◽  
pp. 1943
Author(s):  
Dejan Ravšelj ◽  
Aleksander Aristovnik
Keyword(s):  
Corporate Performance ◽  
Value Added ◽  
Global Competition ◽  
Short Term ◽  
Business Operations ◽  
The Impact ◽  
D Investment ◽  
Practical Implications ◽  
Value Added Products

Research and development (R&D) investment is widely recognised as one of the crucial elements of generating the competitive advantage of contemporary companies. At the same time, it is also considered to represent one of the key determinants of overall sustainable development. Global competition, which is becoming increasingly harsh and forces companies to provide value-added products, processes and services, constitutes a reason why R&D investment is indispensable in contemporary business operations as they facilitate keeping the companies’ position in the market in terms of their competitiveness. The main aim of this paper is therefore to examine the impact of R&D expenditures on corporate performance. Using a multiple regression analysis, two different panel datasets covering Slovenian and world R&D companies are analysed. This gives a unique opportunity to obtain comprehensive and interesting findings, representing the main originality and value of the paper. The empirical results reveal that R&D expenditures are not effective in the short-term period and bring certain benefits in the long-term period. The findings of this paper provide several important theoretical and practical implications.

Cost-Effective Methods of Monitoring Pesticide Pollution in Water

2019 ◽  
pp. 236-256
Author(s):  
S. Kanagasubbulakshmi ◽  
Krishnasamy Lakshmi ◽  
K. Kadirvelu
Keyword(s):  
Multidisciplinary Approach ◽  
Cost Effective ◽  
Long Term Effects ◽  
Pesticide Monitoring ◽  
Pesticide Pollution ◽  
Lack Of Information ◽  
Pros And Cons ◽  
Labeling Requirements ◽  
Monitoring Technologies

Environmental protection efforts require numerous advanced technologies to prevent and monitor the health and ecological effects associated with abiotic and biotic systems. Development of innovative tools and methodologies with the help of multidisciplinary approach to assess the transport, accumulation, and impact of pesticides will avoid the long-term effects in the environment. The lack of information about the pesticides hampers the labeling requirements that lead to misuse and discharge of pesticide-contaminated effluents into the water resources. This chapter covers the information on major sources of pesticides, chronic impacts, labeling of pesticides, multidisciplinary approach for monitoring, current cost-effective technologies, pros and cons of current technologies, and future perspectives of the pesticide monitoring technologies.

Valorisation of lignocellulosic biomass to value-added products: Paving the pathway towards low-carbon footprint

Fuel ◽  
2021 ◽  
pp. 122678
Author(s):  
G. Velvizhi ◽  
Chandamita Goswami ◽  
Nagaraj P. Shetti ◽  
Ejaz Ahmad ◽  
Kamal Kishore Pant ◽  
...  
Keyword(s):  
Lignocellulosic Biomass ◽  
Carbon Footprint ◽  
Value Added ◽  
Low Carbon ◽  
Value Added Products
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